Home / 12,365.14-18,547.49-3,931.61

Finding the Fourth Proportional to 12,365.14, 18,547.49 and 3,931.61

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Solution

The fourth proportional to 12,365.14, 18,547.49 and 3,931.61 is: 5,897.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,365.14 : 18,547.49 = 3,931.61 : x
  2. Step 2: Convert to fraction form
    12,365.14/18,547.49 = 3,931.61/x
  3. Step 3: Cross multiply
    12,365.14x = 18,547.49 × 3,931.61
  4. Step 4: Simplify right side
    12,365.14x = 72,921,497.16
  5. Step 5: Solve for x
    x = 72,921,497.16/12,365.14
  6. Step 6: Final answer
    x = 5,897.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.